Cooling system



Jan. 5, 1932. I CARPENTER 1,840,083

COOLING SYSTEM Filed Feb. 1, 1930 2 Sheets-Sheet l INVENTOR maoumvs L674RPE/VT/ER.

A TT ORNE Y Jan. 5, 1932. M. L. CARPENTIER 1,840,083

COOLING SYSTEM MELEOURNE L. G'AHPENTIER g BY 7 ATTORNEY Patented Jan. 5,1932 UNITED STATES MELBOURNE L. CARPENTIER, 015 DETROIT,

MICHIGAN, ASSIGNOR TO CHRYSLER COB- PORATION, OF DETROIT, MICHIGAN, ACORPORATION 'OF DELAWARE COOLING SYSTEM Application filed February 1,1930. Serial No. 425,380.

This invention relates to an improvedcool;

ing system for internal combustion engines.

The main objects of this invention are to provide a cooling mediumjacket for the cylinders of an internal combustion engine which willcirculate the major part of the incoming medium rearwardly to the end ofthe cylinder block before allowing it to contact with with thecylinders; to provide an improved jacket of this kind which willcirculate the main part of the cooling medium forwardly from in back ofthe rear cylinder; to provide an improved cooling system in which themain part of the incoming cooling medium flows directly along one sideof the valve sleeves before it is heated by the cylinders so as tosubject the valves and their associated members to the maximum coolingaction of the medium; and to provide a partition in the cooling mediumjacket having apertures which will permit some of the incoming mediumto' flow betwen adjacent valve sleeves in close proximity to the valveseats so as to concentrate the cooling action in the vicinity of the 5valve seats and to mix some of the incoming cooling medium with thatpart of the medium which has been heated during its incomplete forwardtravel in the cylinder compartment of the jacket.

An illustrative embodiment of my invention is shown in the accompanyingdrawings, in which:

Fig. 1 is a vertical section of an internal combustion engine embodyingmy invention.

Fig. 2 is a front end elevation of an engine.

Fig. 3 is a side elevation of the engine showing the radiator of itscooling system.

Fig. 4 is a horizontal section taken on line 40 4-4of Fig. 1.

Fig. 5 is a vertical section taken on line 5-5 of Fig. 1.

Fig. 6 is a vertical section taken on line 66 of Fig. 4.

In theform shown, the engine includes a cylinder block having aplurality of cylinders and adjacent valve sleeves about which is formeda cooling medium acket having an inlet passage and a cylindercompartment on the respectively opposite sides of the valve sleeves.Webs joining adjacent sleeves form a partition between the inlet passageand the cylinder compartment which directs the incoming cooling medium,the rear of the block.

In the illustration shown, the internal combustion engine 1 comprises aplurality of cyllnders 2 having an inlet valve sleeve 3 and an exhaustvalve sleeve 4 in related proximity to each cylinder. Surrounding thecylinders and valve sleeves is a cooling medium jacket 5 which has aninlet 6 at its front end. A cooling medium pump having a rotor 7 isjournaled in the inlet 6 and communicates with a radiator 8 through atube 9.

Webs 10 are provided between the adjacent valve sleeves so as to form apartition within the water jacket between the inlet passage 11 and thecylinder compartment 12 thereof. This partition terminates in spacedrelation to the rear end of the jacketand permits the cooling medium toflow into the cylinder compartment in .back of the rear cylinder. Formedon the front exhaust valve sleeve 4 and on the front end of the jacket 5are flanges 14 and 15 respectively, which coact with the rotor 7 inpreventing the incomin cooling medium from entering the front on of thecylinder compartment 12.

Mounted on the top of the cylinder block is a head 18 which has joinedcooling medium compartments 17 and 18. The compartment.

17 communicates with the inlet passage 11 of the water jacket throughregistering apertures 19 and 20 in the head and jacket respectively.There are a plurality of these registering apertures distributedthroughout the length of the head and jacket. Another series ofregistering, apertures 21 and 22 are pro vided in the opposite side ofthe head 16 and jacket 5 respectively, in communication with thecompartment '18 of the head.

Formed at the upper end of the webs 10 are apertures or ports 23 whichpermit some of the incoming cooling medium to flow through the partitionfrom the inlet passage 11 into the cylinder compartment 12 of thejacket. These ports are located in close proximity to the valve seats 24so as to subject the valve seats and the associated structure to thecool-. ing action of the medium before its temperature is increased bcontact with the cylinders.

An outlet 25 on the front end of the head is connected by a tube 26 withthe radiator 8.

In operation, the cooling medium is fed from the radiator 8 through thetube 9 into the inlet passa e 11 of the water jacket by the rotor 7.gome of the medium passes through the ports 23 directly into thecylinder compartment 12 and some of the medium passes upwardly throughthe registering apertures 19 and 20 into the compartment 1 and 18 of thehead 16. The remainder of the medium flows rearwardly to the end of thejacket where it is admitted into the cylinder compartment thereof. Thecooling medium then progresses forwardly in this compartment and as itis heated by the cylinders, it rises and passes upwardly through theregistering apertures 21 and 22 into the compartment 18 of the head 16from which it flows back to the radiator 8 through the outlet 25 andtube 26.

Although but one specific embodiment of this invention has herein beenshown and described, it will be understood that various changesincluding the size, shape and arrangement of parts may bemade withoutdeparting from the spirit of my invention and it is not my intention tolimit its scope other than by the terms of the appended claims.

I claim:

1. In an internal combustion engine comprising a plurality of cylindersand a plurality of valve sleeves, a cooling medium jacket surroundingsaid sleeves and cylinders includin a top wall having valve seats formedt ierein, webs between adjacent valve sleeves having apertures thereinadjacent said top wall, and a cooling medium inlet communicatingdirectly with the space between said sleeves and the adjacent wall ofsaid jacket for circulating some of the cooling medium through saidapertures so as to bring the incoming cooling medium into contact withthe portions of the top wall of said jacket in which said valve seatsare formed, the main part of said cooling medium being directed to therear end of said engine and allowed to circulate forwardly past saidcylinders.

2. In an internal combustion engine a cooling medium jacket having aninlet and an outlet and including a to wall having valve seats formedtherein; an a longitudinal partition in the interior of said jacketregistering with the intermediate portions of said valve seats forproviding a chamber in communication with said inlet to receive theincoming cooling medium and having apertures adjacent said top wall forpermitting some of the incoming cooling medium to flow along and contactwith that portion of the top wall in which the inner parts of said valveseats are formed.

3. In an internal combustion engine a cooling medium jacket having aninlet and an".

formed.

MELBOURNE L. CARPENTIER.

gartition having spaced aper-

